There are plenty of food questions that are easy to answer, like why do some foods taste so good? (the answer may have to do with umami). But have you ever thought about the science behind some of cuisine's more in-depth mysteries? Yes, your coffee is stale, but how did it get that way? Are you really deep in a food coma, or does the mere thought of food-induced fatigue bring on the yawns?
Click through the slideshow below for the answers to these burning questions, and more.